Freestone · Acidic Granitic · Virginia

Rapidan River

Rapidan River venue image
Poor · Brook Trout
Foam Beetle · 14-18
Poorlive now
Not the day for it
River steady at a fishable height. Not much stacked in your favour today. Worth an hour if you are nearby, not worth the special trip.
90% confidence
What moved it
  • Level0.48 mLast reading 20h ago
  • Water temp22.3°C
  • ClarityClear
Today's fly
Foam Beetle
Foam Beetle14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.48 m
Last reading 20h ago
Water temp22.3°C
ClarityClear
Weather24°C
WindSW 9 km/h
Pressure1015 hPa
Rain · recent0.0 mm
Rain · ahead5.5 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for Brook Trout
Welfare risk
22°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brook Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 22.3°C. This is the line where catch-and-release kills brook trout. Do not fish for them today.
Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 3 with Pro.

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Early Black StoneflyHatch
2
3
2
Eastern Golden StoneHatch
2
2
Slate Drake / IsonychiaHatch
2
3
3
3
3
2
Yellow SallyHatch
1
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brook Trout fly box
Local fly shops: Mossy Creek Fly Fishing
What's coming
Plan ahead
5-day outlook
Water here around 22°C. Nothing cooler within range — carry a thermometer.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
Conservation note

Virginia's flagship 100% wild native brook-trout water (Salvelinus fontinalis). brook_trout scores as a conservation-first char comfort-overlay post-seed (char welfare ceiling ~20°C). Acid-deposition-sensitive headwater.

Water quality · US Clean Water Act
  • Aquatic life: Supporting
What this classification means

EPA ATTAINS assessment unit 'Rapidan River' (VAN-E11R_RAP01A00), 2022 Integrated Report. Aquatic Life use: Fully Supporting. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · VAN-E11R_RAP01A00

The full read · show the working · for Brook Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature0 × 28%0.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure75 × 7%5.3
Insect activity56 × 12%6.7
Limiting factor: Water temperature (22.3°C) is outside Brook Trout's preferred range (10–16°C)= 55
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Related guides
Euro Nymphingsubsurface methods
Booking & contacts